Lg Electronics Inc.

Jongyoul Lee

Giwon Park

Hanbyul Seo

Youngdae Lee

Seungmin Lee

Hyukjin Chae

Seoyoung Back

Youngtae Kim

Sunghoon Jung

Daesung Hwang

Jinwoo Kim

Jaeho Hwang

Laeyoung Kim

Heejin Kim

Uihyun Hong

Jayeong Kim

According to an embodiment of the present disclosure, provided is a method by which a first apparatus performs sidelink communication. The method includes the steps of: reserving a plurality of first sidelink transmission resources for transmitting a PSCCH and a PSSCH to a second apparatus; transmitting the PSCCH and the PSSCH to the second apparatus through at least one of the plurality of first sidelink transmission resources; on the basis of a failure of the second apparatus to decode sidelink data included in the PSSCH, reselecting a plurality of second sidelink transmission resources for transmitting the sidelink data; and transmitting the sidelink data to the second apparatus on the basis of the plurality of second sidelink transmission resources.

Method and apparatus for reselecting sidelink transmission resource in NR V2X

According to an embodiment of the present disclosure, provided is a method by which a first apparatus performs sidelink communication. The method may comprise the steps of: transmitting a first transport block to a second apparatus, on a resource allocated by a first SL grant received from a base station; transmitting, to the base station, a system information request message requesting system information; transmitting, on an exceptional resource pool, a second transport block to the second apparatus, on the basis of the transmission of the system information request message to the base station; and receiving, from the base station, first system information related to the system information request message.

Method and apparatus for performing resource pool-based sidelink communication in NR V2X

A method and apparatus for sidelink hybrid automatic repeat request (HARQ) feedback and resource pool selection is provided. When user equipment (UE) autonomous resource selection is configured, a wireless device selects a resource pool configured with physical sidelink feedback channel (PSFCH) resources, among one or more resource pools allowed for a logical channel, based on i) sidelink data being available in the logical channel, ii) any resource pool being not selected for the logical channel, and iii) hybrid automatic repeat request (HARQ) feedback being enabled for the logical channel.

Sidelink HARQ feedback and resource pool selection

An embodiment relates to an operating method of a UE related to a sidelink relay in a wireless communication system, the operating method comprising: receiving, by the UE, a relay functionality enable-related request message; setting, by the UE, a timer; and enabling, by the UE, relay functionality on the basis of expiration of the timer, wherein the timer is released on the basis of receiving a broadcast message notifying relay functionality enable.

Operating method of UE related to relay in wireless communication system

Proposed is an operation method of a first device () in a wireless communication system. The method may comprise the steps of: starting a first timer associated with an on-duration period; receiving, from a second device () via a physical sidelink control channel (PSCCH), first sidelink control information (SCI) for the scheduling of second SCI; receiving, from the second device () via a physical sidelink shared channel (PSSCH), the second SCI, which includes a 16-bit first destination identifier (ID), and a medium access control (MAC) header, which includes an eight-bit second destination ID; acquiring a third destination ID on the basis of the first destination ID and the second destination ID; comparing the third destination ID with a 24-bit first source ID of a first device (); starting a second timer on the basis of the first source ID which is the same as the third destination ID; and carrying out sidelink communication with the second device () on the basis of the second timer which is operating.

Method and device for carrying out timer-based power saving in NR V2X

The present disclosure relates to transmission prioritization in wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system comprises: receiving, from a network, information for a threshold related to a buffer status report (BSR); prioritizing a logical channel group (LCG) for the BSR based on the threshold, wherein a highest priority of one or more logical channels having data available for transmission in the LCG is lower than the threshold; prioritizing the BSR based on the prioritized LCG; creating a media access control (MAC) protocol data unit (PDU) comprising at least the prioritized BSR; and transmitting the MAC PDU.

Method and apparatus for transmission prioritization in wireless communication system

Provided are a method for a first device carrying out wireless communication, and an apparatus supporting same. The method may comprise the steps of: transmitting sidelink control information (SCI) to a second device via a physical sidelink control channel (PSCCH); transmitting data to the second device via a physical sidelink shared channel (PSSCH) which is associated with the PSCCH; determining a physical sidelink feedback channel (PSFCH) resource on the basis of a slot and subchannel associated with the PSSCH: increasing a DTX counter by one on the basis of failing to receive hybrid automatic repeat request (HARQ) feedback on the PSFCH resource; receiving, from the second device, information related to dropping the transmission of the HARQ feedback; and decreasing the DTX counter by N on the basis of the information related to dropping the transmission of the HARQ feedback. Sidelink (SL) radio link failure (RLF) may be declared on the basis that the DTX counter reaches the maximum number of DTXs, and N may be a positive integer.

Method and device for RLF in NR V2X

One embodiment is a method for operating a relay user equipment (UE) related to sidelink relay in a wireless communication system, the method comprising: a relay UE establishing a connection with a remote UE; the relay UE transmitting or receiving a packet related to the remote UE to/from a base station; and the relay UE declaring a radio link failure (RLF), wherein the RLF is related to a Uu link, and the relay UE transmits a message notifying of the RLF to the remote UE, the message being related to a relay reselection trigger.

Method for operating UE related to relay in wireless communication system

A method and apparatus for hybrid automatic repeat request (HARQ) transmission using timers for configured grants and discontinuous reception (DRX) is provided. A first wireless device operating in a wireless communication system receives, from a second wireless device, a sidelink HARQ feedback for a media access control (MAC) protocol data unit (PDU) on a physical sidelink feedback channel (PSFCH), and starts a DRX HARQ round trip time (RTT) timer for a HARQ process ID after end of reception of the sidelink HARQ feedback. Upon expiry of the DRX HARQ RTT timer, the first wireless device starts a DRX retransmission timer, and monitors a physical downlink control channel (PDCCH) carrying a sidelink retransmission grant during an active time including a time interval for which the DRX retransmission timer is running.

HARQ transmission using timers for configured grants and discontinuous reception

According to one embodiment of the present disclosure, provided is a method by which a first apparatus performs sidelink communication. In one example, provided is a method by which the first device saves power for sidelink communication in NR V2X.

Method and device for saving power for sidelink communication in NR V2X

Proposed is a method for operating a first device in a wireless communication system. The method may comprise: a step for requesting a report of a channel state, on the basis of information related to a sidelink resource and HARQ information; a step for transmitting an RS related to the measurement of the channel state to a second device; a step for receiving a measurement result related to the channel state from the second device; and a step for reporting the measurement result to a base station.

Method and device for triggering measurement/report of aperiodic sidelink channel state information on basis of retransmission result in wireless communication system

Provided are a method by which a first device performs wireless communication, and an apparatus for supporting same. The method comprises the steps of: transmitting, to a second device, a measurement configuration including a measurement object, a measurement identity, reporting configurations, and quantity configurations, wherein the reporting configurations include information related to a first report interval; and receiving a plurality of measurement report messages, including a measurement result obtained on the basis of the measurement configuration, from the second device on the basis of the first reporting interval, wherein the first report interval can be determined by a first device.

Method and apparatus for performing measurements in NR V2X

An embodiment relates to a method for a sidelink discontinuous reception (DRX)-related operation of a second user equipment (UE) in a wireless communication system, the method comprising: a step in which a second UE enters a sleep state; and a step in which the second UE switches to an awake state in a predetermined interval and receives a broadcast signal from a first UE, wherein the broadcast signal is received on a resource pool configured only for a sidelink broadcast.

Method for sidelink DRX-related operation of UE in wireless communication system

The present disclosure relates to resource request in wireless communications. According to an embodiment of the present disclosure, a method performed by a first wireless device configured to operate in a wireless communication system, the method comprises: receiving, from a network, one or more sidelink grants; creating a data unit based on the one or more sidelink grants; performing a transmission of the data unit to a second wireless device by using the one or more sidelink grants; transmitting, to the network via a physical uplink control channel (PUCCH), a resource request for a retransmission of the data unit based on a quality of service (QoS) requirement of the data unit; receiving, from the network, one or more sidelink grants for the retransmission of the data unit; and performing the retransmission of the data unit to the second wireless device by using the one or more sidelink grants for the retransmission of the data unit.

Method and apparatus for resource request in wireless communication system

Proposed is a method for performing wireless communication by a first device. The method may comprise the steps of: receiving a physical sidelink control channel (PSCCH) from a second device; receiving a physical sidelink shared channel (PSSCH) related to the PSCCH from the second device, wherein sidelink control information (SCI) is received via the PSCCH or the PSSCH related to the PSCCH, and the SCI includes information indicating whether the PSSCH corresponds to last PSSCH transmission: determining a PSFCH resource on the basis of a slot index and a sub-channel index which are related to the PSSCH: transmitting SL HARQ ACK information to the second device via the PSFCH resource; and entering a sleep state on the basis that the SCI includes information indicating that the PSSCH corresponds to the last PSSCH transmission, and the first device transmits the SL HARQ ACK information via the PSFCH resource.

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Seoul, South Korea

Jongyoul Lee